National (U.S.)

New research offers a partial solution to the ongoing mystery of deformed frogs.

"The chairman of agribusiness giant Monsanto demanded Monday that his counterpart at DuPont -- his firm's leading competitor in the seed business -- appoint a special committee to investigate what he said was a pattern of covert attacks on Monsanto's business practices by DuPont."

"Hard on the heels of the health care protests, another citizen movement seems to have sprung up, this one to oppose Washington's attempts to tackle climate change. But behind the scenes, an industry with much at stake -- Big Oil -- is pulling the strings."

"Congressional investigators have uncovered five more letters sent to members of Congress that falsely claimed to be from charities expressing opposition to climate change legislation."

"The manufacturer settles an environmental lawsuit with California over lead used to keep the artificial turf green. AstroTurf and other turf-makers insist their product is safe in California."

"U.S. Agriculture Secretary Tom Vilsack on Friday outlined a vision for managing the nation's forests that placed a high priority on restoration to protect water resources and combat climate change."

"The reclassification of nearly 1 million acres of land around the Grand Canyon to prevent new mining claims comes with a fundamental change in how the U.S. Forest Service does business with mining companies."

The Southern Utes, one of America's wealthiest Indian communities, is investing in an unusual biofuel startup based on algae. Respect for the earth is a key part of the business model.

"CORPUS CHRISTI -- A fire last month at a local Citgo refinery has focused attention on what is likely the most dangerous chemical used in the refining process."

"As fears were growing about the link between hormone therapy and breast cancer, a drug company paid the University of Wisconsin to sponsor ghostwritten medical education articles that downplayed the risks, records obtained by the Journal Sentinel show."